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TMZ reports Adam Kenworthy is the boyfriend of Real Housewives of New York star Carole Radziwill. He's appearing on the season that's currently airing on the Bravo network.

Radziwill told TMZ that "Adam was released from the hospital a few hours after the crash, and his mom says he suffered a few abrasions but will be fine."

West Des Moines police confirmed the pilot was David Kenworthy, 65, of Des Moines, and the passenger was Adam Kenworthy, 30, of New York. The plane is owned by Oakwood Group LLC, which lists David Kenworthy as its main contact.

The biplane crashed into a hill Thursday after it tried to make an emergency landing in the 3000 block of Southeast Army Post Road around 7:30 p.m. The front end of the aircraft was destroyed.

The initial crash report released Friday morning from the FAA shows that the aircraft N5SED "crashed under unknown circumstances."

The report shows one person suffered serious injuries and the other minor. Both men were able to walk away from the crash and were taken to Iowa Methodist Medical Center.

First responders said the strip of flat land likely saved their lives. A 65-year-old man was flying the plane while his 30-year-old son was in the passenger seat.

"They were both awake and alert and were able to explain you know kind of what happened," said Des Moines EMS spokesman David Edgar. "The pilot did an excellent job of locating a place to put it down, and I think that they probably almost made it over this gully here but didn't quite make it. So I'm sure that his skill in finding a place to land saved their lives."

The aircraft left the Des Moines Airport and was shortly thereafter declared an aircraft emergency. The passenger used his cellphone to alert the control tower they were making an emergency landing.

They made their descent attempting to land on a strip of open land but crashed into a small hillside.

Cole Wittern's family has lived on this property for years. He and a handful of other onlookers gathered from the road to take pictures and videos last night.

"You never see this especially on your own property here," said Cole Wittern. "Very lucky, very blessed I guess to walk back from that."

Federal authorities, the FAA, and National Transportation Safety Board started their investigation Friday morning.

Look for more on this story coming up on KCCI-TV, our apps, mobile website, KCCI.com, and our Facebook page.